B161F

B161F-READING LAMP CONTROL CIRCUIT LOW





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
The Cluster detects a short to ground on the (M27) Reading/Rail Lamps Driver circuit.





Diagnostic Test

1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes
- Go To 2

No
- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. (M27) READING/RAIL LAMPS DRIVER SHORTED TO GROUND
1. Turn the ignition off.
2. Disconnect the Cluster C3 harness connector.
3. Measure the resistance between ground and the (M27) Reading/Rail Lamps Driver circuit at the Cluster C3 harness connector.

Is the resistance below 5.0 Ohms?

Yes
- Repair the (M27) Reading/Rail Lamps Driver circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No
- Replace the Cluster.
- Perform the BODY VERIFICATION TEST. Body Verification Test.